2 sentences for 自动 (zì​dòng — voluntary)

1. 他自动申请去偏远地区工作。

   tā zì​dòng shēn​qǐng qù piān​yuǎn dì​qū gōng​zuò.

   He volunteered to work in a remote area.

   Source: Dong Chinese Dictionary

2. 过时未报到者，将被视为自动放弃录取资格。

   guò​shí wèi bào​dào zhě, jiāng bèi shì​wéi zì​dòng fàng​qì lù​qǔ zī​gé.

   Those who fail to report on time will be considered to have automatically forfeited their admission.

   Source: Dong Chinese Dictionary